<template>
  <div>
    <!--面包屑区域-->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>添加商品</el-breadcrumb-item>
    </el-breadcrumb>
    <!--内容主体区域-->
    <el-card>
      <el-alert
        title="添加商品信息"
        center
        type="info"
        show-icon
        :closable="false"
      ></el-alert>
      <el-steps
        :space="200"
        :active="activeIndex - 0"
        finish-status="success"
        align-center
      >
        <el-step title="基本信息"></el-step>
        <el-step title="商品参数"></el-step>
        <el-step title="商品属性"></el-step>
        <el-step title="商品图片"></el-step>
        <el-step title="商品内容"></el-step>
        <el-step title="完成"></el-step>
      </el-steps>
      <el-form
        :model="addForm"
        :rules="addFormRules"
        ref="addFormRef"
        label-width="100px"
        label-position="top"
      >
        <el-tabs
          v-model="activeIndex"
          :tab-position="'left'"
          :before-leave="beforeTabLeave"
          @tab-click="tabClicked"
        >
          <el-tab-pane label="基本信息" name="0">
            <el-form-item label="商品名称" prop="goods_name">
              <el-input v-model="addForm.goods_name"></el-input>
            </el-form-item>
            <el-form-item label="商品价格" prop="goods_price">
              <el-input v-model="addForm.goods_price" type="number"></el-input>
            </el-form-item>
            <el-form-item label="商品重量" prop="goods_weight" type="number">
              <el-input v-model="addForm.goods_weight"></el-input>
            </el-form-item>
            <el-form-item label="商品数量" prop="goods_number" type="number">
              <el-input v-model="addForm.goods_number"></el-input>
            </el-form-item>
            <el-form-item label="商品分类" prop="cat_name">
              <el-cascader
                v-model="addForm.goods_cat"
                :options="catelist"
                :props="cateProps"
                @change="handleChange"
              ></el-cascader>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品参数" name="1">
            <!--渲染表单item项-->
            <el-form-item
              :label="item.attr_name"
              v-for="item in manyTabDate"
              :key="item.attr_id"
            >
              <el-checkbox-group v-model="item.attr_vals">
                <el-checkbox
                  :label="cb"
                  v-for="(cb, i) in item.attr_vals"
                  :key="i"
                  border
                ></el-checkbox>
              </el-checkbox-group>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品属性" name="2">
            <el-form-item
              :label="item.attr_name"
              v-for="item in onlyTabData"
              :key="item.attr_id"
            >
              <el-input v-model="item.attr_vals"></el-input
            ></el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品图片" name="3">
            <el-upload
              action="http://www.ysqorz.top:8888/api/private/v1/upload"
              :on-preview="handlePreview"
              :on-remove="handleRemove"
              list-type="picture"
              :headers="headerObj"
              :on-success="handleSuccess"
            >
              <el-button size="small" type="primary">点击上传</el-button>
            </el-upload>
          </el-tab-pane>
          <el-tab-pane label="商品内容" name="4">
            <quill-editor v-model="addForm.goods_introduce"></quill-editor>
            <el-button type="primary" class="addCateButton" @click="add"
              >添加商品</el-button
            >
          </el-tab-pane>
        </el-tabs>
      </el-form>
    </el-card>
    <el-dialog
      title="图片预览"
      :visible.sync="previewDialogVisible"
      width="50%"
    >
      <img :src="previewImgURL" class="previewImg" />
    </el-dialog>
  </div>
</template>

<script>
import _ from 'lodash'
export default {
  data() {
    return {
      activeIndex: '0',
      //表单数据绑定对象
      addForm: {
        goods_name: '',
        goods_price: 0,
        goods_weight: 0,
        goods_number: 0,
        goods_cat: '',
        pics: [],
        goods_introduce: '',
        attrs: [],
      },
      //表单验证规则
      addFormRules: {
        goods_name: [
          { required: true, message: '请输入商品名称！', trigger: 'blur' },
        ],
        goods_price: [
          { required: true, message: '请输入商品价格！', trigger: 'blur' },
        ],
        goods_weight: [
          { required: true, message: '请输入商品重量！', trigger: 'blur' },
        ],
        goods_number: [
          { required: true, message: '请输入商品数量！', trigger: 'blur' },
        ],
        // cat_name: [
        //   { required: true, message: '请选择商品分类！', trigger: 'blur' },
        // ],
      },
      //获取商品分类数据
      catelist: [],
      //商品分类级联选择器配置
      cateProps: {
        expandTrigger: 'hover',
        label: 'cat_name',
        value: 'cat_id',
        children: 'children',
      },
      //动态参数列表数据
      manyTabDate: [],
      //静态属性列表数据
      onlyTabData: [],
      //上传照片的URL地址
      uploadURL: 'http://www.ysqorz.top:8888/api/private/v1/upload',
      headerObj: {
        Authorization: window.sessionStorage.getItem('token'),
      },
      //图片详细地址
      previewImgURL: '',
      previewDialogVisible: false,
    }
  },
  created() {
    this.getCateList()
  },
  methods: {
    async getCateList() {
      const { data: res } = await this.$http.get('categories')
      if (res.meta.status !== 200) {
        return this.$message.error('获取分类列表失败！')
      }
      // console.log(res.data)
      this.catelist = res.data
    },
    //级联选择器变化时会触发该函数
    handleChange() {
      // console.log('change!');
      if (this.addForm.goods_cat.length !== 3) {
        this.addForm.goods_cat = []
      }
    },
    //标签页跳转前的钩子函数验证
    beforeTabLeave(activeName, oldActiveName) {
      if (oldActiveName === '0' && this.addForm.goods_cat.length !== 3) {
        this.$message.error('请先选择商品分类！')
        return false
      }
    },
    //选中标签页触发函数
    async tabClicked() {
      // console.log(this.activeIndex);
      if (this.activeIndex === '1') {
        const { data: res } = await this.$http.get(
          `categories/${this.cateId}/attributes`,
          {
            params: { sel: 'many' },
          }
        )
        if (res.meta.status !== 200) {
          return this.$message.error('获取动态参数失败！')
        }
        // console.log(res.data)
        res.data.forEach((item) => {
          item.attr_vals =
            item.attr_vals.length === 0 ? [] : item.attr_vals.split(' ')
        })
        this.manyTabDate = res.data
      } else if (this.activeIndex === '2') {
        const { data: res } = await this.$http.get(
          `categories/${this.cateId}/attributes`,
          {
            params: { sel: 'only' },
          }
        )
        if (res.meta.status !== 200) {
          return this.$message.error('获取动态参数失败！')
        }
        this.onlyTabData = res.data
        console.log(res.data)
      }
    },
    //处理图片预览效果
    handlePreview(file) {
      // console.log(file);
      this.previewImgURL = file.response.data.url
      this.previewDialogVisible = true
    },
    //处理移除图片的操作
    handleRemove(file) {
      //1.获取将要删除的图片的临时地址
      // console.log(file);
      const filePath = file.response.data.tmp_path
      //2.从pics数组中找到该地址的索引值
      const i = this.addForm.pics.findIndex((item) => item.pic === filePath)
      //3.使用splice方法根据地址索引值删除图片相关信息
      this.addForm.pics.splice(i, 1)
      console.log(this.addForm)
    },
    //文件提交成功时
    handleSuccess(response) {
      // console.log(response);
      const picInfo = { pic: response.data.tmp_path }
      this.addForm.pics.push(picInfo)
      console.log(this.addForm)
    },
    //添加商品
    add() {
      // console.log(this.addForm);
      this.$refs.addFormRef.validate(async (valid) => {
        if (!valid) {
          return this.$message.error('请输入必要的表单项！')
        }
        const form = _.cloneDeep(this.addForm)
      form.goods_cat = form.goods_cat.join(',')
      //动态参数列表数据
      this.manyTabDate.forEach((item) => {
        const newInfo = {
          attr_id: item.attr_id,
          attr_value: item.attr_vals.join(' '),
        }
        this.addForm.attrs.push(newInfo)
      }),
        //静态属性参数列表
        this.onlyTabData.forEach((item) => {
          const newInfo = {
            attr_id: item.attr_id,
            attr_value: item.attr_vals,
          }
          this.addForm.attrs.push(newInfo)
        }),
        form.attrs = this.addForm.attrs
        // console.log(form);
        //发起添加请求
        const {data:res} = await this.$http.post('goods',form)
        if(res.meta.status !== 201){
          return this.$message.error('添加商品失败！')
        }
        this.$message.success('成功添加商品！')
        this.$router.push('/goods')
      })
    },
  },
  computed: {
    cateId() {
      if (this.addForm.goods_cat.length === 3) {
        return this.addForm.goods_cat[2]
      }
      return null
    },
  },
}
</script>

<style scoped lang="less">
.el-checkbox {
  margin: 0 10px 0 0 !important;
}
.previewImg {
  width: 100%;
}
.addCateButton {
  margin-top: 15px;
}
</style>